A hardware cold extrusion forging die and processing method

Abstract

The present invention relates to the technical field of hardware forging, and discloses a hardware cold extrusion forging die and processing method, comprising a workbench, the upper surface of the workbench is fixedly connected with a bottom plate, the upper surface of the bottom plate is fixedly connected with a first support plate, the interior of the bottom plate is slidably connected with a first sliding shaft, the interior of the first support plate is provided with a first spring, the outer wall of the first sliding shaft is slidably connected with a support seat, a placement groove is provided inside the support seat, the interior of the bottom plate is slidably connected with a sliding column, the outer wall of the sliding column is slidably connected with a top plate, the lower surface of the top plate is fixedly connected with a second sliding shaft, and the outer wall of the second sliding shaft is slidably connected with a pressure plate. By starting a hydraulic press to push the top plate down, the second support plate drives the pressure plate to descend and extrude the copper, steel or aluminum parts inside the placement groove, thereby reducing the stress concentration phenomenon during the extrusion process, which helps to reduce the stress and deformation of the material.

Description

Technical Field

[0001] The invention relates to the technical field of hardware forging, in particular to a hardware cold extrusion forging die and a processing method. Background Art

[0002] Hardware cold extrusion forging dies are tools used to extrude metal materials (copper, steel or aluminum) at room temperature. In this process, the metal material (copper, steel or aluminum) is extruded into the desired shape without heating through the pressure between one or more pairs of dies. This extrusion process is usually suitable for the manufacture of hardware with simple shapes and mass production. These dies are usually made of high-strength alloy steel or cemented carbide to ensure that they can withstand high pressure and high stress during the extrusion process, and have sufficient wear resistance and corrosion resistance. According to the shape and size of the hardware, the die can be designed into a variety of different shapes.

[0003] However, the existing cold extrusion forging dies for hardware are prone to stress concentration during the extrusion process, and the workpiece cannot be cooled quickly after the extrusion is completed, which will cause the grains inside to gradually grow during the slow cooling process, resulting in grain coarsening and reducing the strength and hardness of the metal material. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a hardware cold extrusion forging die and a processing method, which solves the problem that stress concentration is prone to occur during the shape extrusion process of the existing hardware cold extrusion forging die.

[0005] To achieve the above objectives, the present invention is implemented through the following technical scheme: a hardware cold extrusion forging die comprises a workbench, the upper surface of the workbench is fixedly connected to a bottom plate, the upper surface of the bottom plate is fixedly connected to a first support plate, the bottom plate is slidably connected to a first sliding shaft, a first spring is arranged inside the first support plate, an outer wall of the first sliding shaft is slidably connected to a support seat, a placement groove is provided inside the support seat, a sliding column is slidably connected to the bottom plate, the outer wall of the sliding column is slidably connected to a top plate, the lower surface of the top plate is fixedly connected to a second support plate, the lower surface of the top plate is fixedly connected to a second sliding shaft, the lower surface of the top plate is fixedly connected to a second spring, the outer wall of the second sliding shaft is slidably connected to a pressing plate, the lower surface of the pressing plate is arranged on the upper surface of the support seat, and a supporting assembly is arranged on the outer wall of the workbench.

[0006] Preferably, the support assembly comprises a side plate, an outer wall of the side plate is fixedly connected to an outer wall of the workbench, the outer wall of the side plate is fixedly connected to a fixing plate, and a lower surface of the fixing plate is fixedly connected to a hydraulic press.

[0007] Preferably, the outer wall of the first sliding shaft is slidably connected to the inside of the first support plate, the inner wall of the first spring is slidably connected to the outer wall of the first sliding shaft, the top of the first spring is fixedly connected to the lower surface of the support seat, the inner wall of the second spring is slidably connected to the outer wall of the second sliding shaft of the second sliding shaft, and the bottom end of the second spring is fixedly connected to the upper surface of the pressure plate.

[0008] Preferably, a support plate is fixedly connected to the upper surface of the workbench, a bracket is fixedly connected to the outer wall of the support plate, and a motor is fixedly connected to the interior of the bracket.

[0009] Preferably, the output end of the motor is fixedly connected to a turntable, the outer wall of the turntable is fixedly connected to a fixing sleeve, the outer wall of the turntable is fixedly connected to a connecting column, and the outer wall of the connecting column is fixedly connected to the inner wall of the fixing sleeve.

[0010] Preferably, the outer wall of the connecting column is slidably connected to a movable sleeve, and the outer wall of the movable sleeve is slidably connected to the outer wall of the fixed sleeve.

[0011] Preferably, the outer wall of the movable sleeve is fixedly connected with a sliding rod, and one end of the sliding rod is fixedly connected with a fan.

[0012] Preferably, a method for processing a hardware cold extrusion forging die comprises the following steps:

[0013] S1: Raw material preparation: prepare suitable metal raw materials, copper, steel or aluminum parts, and cut them into workpieces of appropriate size according to the shape and size of the hardware;

[0014] S2: Preheating: Preheat the metal workpiece to improve the ductility and plasticity of the metal, which is conducive to extrusion molding;

[0015] S3: Mold installation: Place the prepared metal workpiece in the appropriate position of the mold to ensure a good fit with the mold;

[0016] S4: Cold extrusion forging: Install the die on the cold extrusion machine, and use hydraulic pressure to squeeze the metal workpiece into the die cavity to form the shape of the hardware;

[0017] S5; Molding adjustment: Adjust the size and shape of the extruded hardware as needed, and then cool it to increase its strength.

[0018] Preferably, in the S4 step, the hydraulic press on the lower surface of the fixed plate is first turned on. When the hydraulic press starts to run, it will push the top plate at its output end to descend. When the inner wall of the top plate slides on the outer wall of the sliding column, it will drive the second support plate on its lower surface to descend. When the second support plate is driven to descend by the top plate, it will drive the pressure plate on its lower surface to descend and squeeze the metal workpiece inside the placement groove. When the lower surface of the pressure plate descends to the upper surface of the support seat, the inner wall of the support seat will slide slightly on the outer wall of the first sliding shaft. When the inner wall of the support seat slides slightly on the outer wall of the first sliding shaft, the first spring will be compressed. When the first spring is compressed, its inner wall will slide on the outer wall of the first sliding shaft. Finally, when the lower surface of the pressure plate extrude the metal workpiece inside the placement groove, the top plate can be lifted to proceed to the next step.

[0019] Preferably, in the step S5, the motor inside the bracket is first turned on. When the motor starts to operate, it will drive the turntable at its output end to rotate. When the turntable rotates, the fixed sleeve of its outer wall will rotate. When the turntable rotates, it will also drive the connecting column of its outer wall to rotate. When the connecting column rotates, it will slide up and down on the inner wall of the movable sleeve of its outer wall. When the outer wall of the connecting column slides up and down on the inner wall of the movable sleeve, it will drive the movable sleeve to rotate with it. When the movable sleeve rotates, it will drive the sliding rod of its outer wall to slide left and right inside the bracket. When the sliding rod slides left and right inside the bracket, it will drive the fan at one end to cool the extruded metal workpiece.

[0020] The present invention provides a hardware cold extrusion forging die and processing method.

[0021] Beneficial effects:

[0022] 1. The present invention starts a hydraulic press, which pushes the top plate down, and the top plate drives the second support plate down, and the second support plate drives the pressing plate to descend and extrude the copper, steel or aluminum parts inside the placement groove. When the copper, steel or aluminum parts inside the placement groove are extruded and formed by the lower surface of the pressing plate, the top plate can be lifted to perform the next operation, thereby reducing the stress concentration phenomenon during the extrusion process, helping to reduce the stress and deformation of the material, and improving the extrusion quality.

[0023] 2. The present invention drives the turntable to rotate by a motor, and the turntable drives the fixed sleeve to rotate and drives the connecting column to rotate and slide up and down on the inner wall of the movable sleeve, the connecting column drives the movable sleeve to follow its rotation, the movable sleeve drives the sliding rod to slide left and right inside the bracket, and the sliding rod drives the fan to cool the extruded metal workpiece, thereby achieving the effect of rapid solidification of the metal workpiece through rapid cooling, improving its grain structure, improving hardness and strength, and increasing tensile strength and impact resistance.

[0024] 3. The present invention can achieve high-precision forming of hardware and ensure the accuracy of product size and shape through raw material preparation, preheating, mold installation, cold extrusion forging, and molding adjustment, through carefully designed molds and precise processing methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A perspective view of the present invention;

[0026] Figure 2 It is a schematic diagram of the support base of the present invention;

[0027] Figure 3 is a schematic diagram of a first spring of the present invention;

[0028] Figure 4 It is a schematic diagram of a pressing plate of the present invention;

[0029] Figure 5 is a cross-sectional view of the stent of the present invention;

[0030] Figure 6 It is a schematic diagram of a fan of the present invention.

[0031] Among them, 1. workbench; 2. bottom plate; 3. first support plate; 4. first sliding shaft; 5. first spring; 6. support seat; 7. placement groove; 8. sliding column; 9. top plate; 10. second support plate; 11. second sliding shaft; 12. second spring; 13. pressure plate; 14. side plate; 15. fixed plate; 16. hydraulic press; 17. support plate; 18. bracket; 19. motor; 20. turntable; 21. fixed sleeve; 22. movable sleeve; 23. connecting column; 24. sliding rod; 25. fan. DETAILED DESCRIPTION

[0032] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Embodiment 1:

[0034] Please see attached Figure 1 - Attachment Figure 6The embodiment of the present invention provides a hardware cold extrusion forging die, including a workbench 1, characterized in that a bottom plate 2 is fixedly connected to the upper surface of the workbench 1, a first support plate 3 is fixedly connected to the upper surface of the bottom plate 2, a first sliding shaft 4 is slidably connected inside the bottom plate 2, a first spring 5 is arranged inside the first support plate 3, a support seat 6 is slidably connected to the outer wall of the first sliding shaft 4, a placement groove 7 is provided inside the support seat 6, a sliding column 8 is slidably connected to the inside of the bottom plate 2, a top plate 9 is slidably connected to the outer wall of the sliding column 8, a second support plate 10 is fixedly connected to the lower surface of the top plate 9, a second sliding shaft 11 is fixedly connected to the lower surface of the top plate 9, a second spring 12 is fixedly connected to the lower surface of the top plate 9, a pressing plate 13 is slidably connected to the outer wall of the second sliding shaft 11, the lower surface of the pressing plate 13 is arranged on the upper surface of the support seat 6, and a supporting component is arranged on the outer wall of the workbench 1.

[0035] The supporting assembly includes a side plate 14, the outer wall of the side plate 14 is fixedly connected to the outer wall of the workbench 1, the outer wall of the side plate 14 is fixedly connected to a fixed plate 15, and the lower surface of the fixed plate 15 is fixedly connected to a hydraulic press 16; the outer wall of the first sliding shaft 4 is slidably connected to the inside of the first supporting plate 3, the inner wall of the first spring 5 is slidably connected to the outer wall of the first sliding shaft 4, the top end of the first spring 5 is fixedly connected to the lower surface of the supporting seat 6, the inner wall of the second spring 12 is slidably connected to the outer wall of the second sliding shaft 11, and the bottom end of the second spring 12 is fixedly connected to the upper surface of the pressing plate 13.

[0036] The upper surface of the workbench 1 is fixedly connected with a support plate 17, the outer wall of the support plate 17 is fixedly connected with a bracket 18, and the inside of the bracket 18 is fixedly connected with a motor 19; the output end of the motor 19 is fixedly connected with a turntable 20, the outer wall of the turntable 20 is fixedly connected with a fixed sleeve 21, the outer wall of the turntable 20 is fixedly connected with a connecting column 23, and the outer wall of the connecting column 23 is fixedly connected to the inner wall of the fixed sleeve 21; the outer wall of the connecting column 23 is slidably connected with a moving sleeve 22, and the outer wall of the moving sleeve 22 is slidably connected to the outer wall of the fixed sleeve 21; the outer wall of the moving sleeve 22 is fixedly connected with a sliding rod 24, and one end of the sliding rod 24 is fixedly connected with a fan 25;

[0037] Specifically, the motor 19 is turned on to drive the turntable 20 to rotate. When the turntable 20 rotates, it drives the fixed sleeve 21 to rotate, and drives the connecting column 23 to rotate and slide up and down on the inner wall of the movable sleeve 22. The connecting column 23 drives the movable sleeve 22 to rotate with it. The movable sleeve 22 will drive the sliding rod 24 to slide left and right inside the bracket 18. The sliding rod 24 drives the fan 25 to cool the extruded metal workpiece.

[0038] The embodiment of the present invention provides a method for processing a hardware cold extrusion forging die, comprising the following steps:

[0039] S1: Raw material preparation: prepare suitable metal raw materials, copper, steel or aluminum parts, and cut them into workpieces of appropriate size according to the shape and size of the hardware;

[0040] S2: Preheating: Preheat the metal workpiece to improve the ductility and plasticity of the metal, which is conducive to extrusion molding;

[0041] S3: Mold installation: Place the prepared metal workpiece in the appropriate position of the mold to ensure a good fit with the mold;

[0042] S4: Cold extrusion forging: Install the die on the cold extrusion machine, and use hydraulic pressure to squeeze the metal workpiece into the die cavity to form the shape of the hardware;

[0043] S5; Molding adjustment: Adjust the size and shape of the extruded hardware as needed, and then cool it to increase its strength.

[0044] In step S4, first, the hydraulic press 16 on the lower surface of the fixed plate 15 is turned on. When the hydraulic press 16 starts to run, it will push the top plate 9 at its output end to descend. When the inner wall of the top plate 9 slides on the outer wall of the sliding column 8, it will drive the second support plate 10 on its lower surface to descend. When the second support plate 10 is driven to descend by the top plate 9, it will drive the pressing plate 13 on its lower surface to descend and squeeze the metal workpiece inside the placement groove 7. When the lower surface of the pressing plate 13 drops to the upper surface of the support seat 6, the inner wall of the support seat 6 will slide slightly on the outer wall of the first sliding shaft 4. When the inner wall of the support seat 6 slides slightly on the outer wall of the first sliding shaft 4, the first spring 5 will be compressed. When the first spring 5 is compressed, its inner wall will slide on the outer wall of the first sliding shaft 4. Finally, when the lower surface of the pressing plate 13 extrude the metal workpiece inside the placement groove 7, the top plate 9 can be lifted to proceed to the next step.

[0045] In step S5, first, the motor 19 inside the bracket 18 is turned on. When the motor 19 starts to operate, it will drive the turntable 20 at its output end to rotate. When the turntable 20 rotates, the fixed sleeve 21 on its outer wall will rotate. When the turntable 20 rotates, it will also drive the connecting column 23 on its outer wall to rotate. When the connecting column 23 rotates, it will slide up and down on the inner wall of the movable sleeve 22 on its outer wall. When the outer wall of the connecting column 23 slides up and down on the inner wall of the movable sleeve 22, it will drive the movable sleeve 22 to rotate with it. When the movable sleeve 22 rotates, it will drive the sliding rod 24 on its outer wall to slide left and right inside the bracket 18. When the sliding rod 24 slides left and right inside the bracket 18, it will drive the fan 25 at one end thereof to cool the extruded metal workpiece.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hardware cold extrusion forging die, comprising a workbench (1), characterized in that: The upper surface of the workbench (1) is fixedly connected with a bottom plate (2), the upper surface of the bottom plate (2) is fixedly connected with a first support plate (3), the interior of the bottom plate (2) is slidably connected with a first sliding shaft (4), the interior of the first support plate (3) is provided with a first spring (5), the outer wall of the first sliding shaft (4) is slidably connected with a support seat (6), the interior of the support seat (6) is provided with a placement groove (7), the interior of the bottom plate (2) is slidably connected with a sliding column (8), the outer wall of the sliding column (8) is slidably connected with a top plate (9), the lower surface of the top plate (9) is fixedly connected with a second support plate (10), the lower surface of the top plate (9) is fixedly connected with a second sliding shaft (11), the lower surface of the top plate (9) is fixedly connected with a second spring (12), the outer wall of the second sliding shaft (11) is slidably connected with a pressing plate (13), the lower surface of the pressing plate (13) is arranged on the upper surface of the support seat (6), and the outer wall of the workbench (1) is provided with a supporting assembly.

2. A hardware cold extrusion forging die according to claim 1, characterized in that: The support assembly comprises a side plate (14), the outer wall of the side plate (14) is fixedly connected to the outer wall of the workbench (1), the outer wall of the side plate (14) is fixedly connected to a fixing plate (15), and the lower surface of the fixing plate (15) is fixedly connected to a hydraulic press (16).

3. A hardware cold extrusion forging die according to claim 1, characterized in that: The outer wall of the first sliding shaft (4) is slidably connected to the inside of the first support plate (3), the inner wall of the first spring (5) is slidably connected to the outer wall of the first sliding shaft (4), the top end of the first spring (5) is fixedly connected to the lower surface of the support seat (6), the inner wall of the second spring (12) is slidably connected to the outer wall of the second sliding shaft (11) of the second sliding shaft (11), and the bottom end of the second spring (12) is fixedly connected to the upper surface of the pressure plate (13).

4. A hardware cold extrusion forging die according to claim 1, characterized in that: A support plate (17) is fixedly connected to the upper surface of the workbench (1), a bracket (18) is fixedly connected to the outer wall of the support plate (17), and a motor (19) is fixedly connected inside the bracket (18).

5. A hardware cold extrusion forging die according to claim 4, characterized in that: The output end of the motor (19) is fixedly connected to a rotating disk (20), the outer wall of the rotating disk (20) is fixedly connected to a fixing sleeve (21), the outer wall of the rotating disk (20) is fixedly connected to a connecting column (23), and the outer wall of the connecting column (23) is fixedly connected to the inner wall of the fixing sleeve (21).

6. A hardware cold extrusion forging die according to claim 5, characterized in that: The outer wall of the connecting column (23) is slidably connected to a movable sleeve (22), and the outer wall of the movable sleeve (22) is slidably connected to the outer wall of the fixed sleeve (21).

7. A hardware cold extrusion forging die according to claim 6, characterized in that: The outer wall of the movable sleeve (22) is fixedly connected to a sliding rod (24), and one end of the sliding rod (24) is fixedly connected to a fan (25).

8. A method for processing a hardware cold extrusion forging die, according to a hardware cold extrusion forging die according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1: Raw material preparation: prepare suitable metal raw materials, copper, steel or aluminum parts, and cut them into workpieces of appropriate size according to the shape and size of the hardware; S2: Preheating: Preheat the metal workpiece to improve the ductility and plasticity of the metal, which is conducive to extrusion molding; S3: Mold installation: Place the prepared metal workpiece in the appropriate position of the mold to ensure a good fit with the mold; S4: Cold extrusion forging: Install the die on the cold extrusion machine, and use hydraulic pressure to squeeze the metal workpiece into the die cavity to form the shape of the hardware; S5; Molding adjustment: Adjust the size and shape of the extruded hardware as needed, and then cool it to increase its strength.

9. A method for processing a hardware cold extrusion forging die according to claim 8, characterized in that: In the step S4, the hydraulic press (16) on the lower surface of the fixed plate (15) is first turned on. When the hydraulic press (16) starts to run, it pushes the top plate (9) at its output end to descend. When the inner wall of the top plate (9) slides on the outer wall of the sliding column (8), it drives the second support plate (10) on its lower surface to descend. When the second support plate (10) is driven to descend by the top plate (9), it drives the pressure plate (13) on its lower surface to descend and squeeze the metal workpiece inside the placement groove (7). When the pressure plate (13) is pressed, the metal workpiece is pressed. When the lower surface of the plate (13) descends to the upper surface of the support seat (6), the inner wall of the support seat (6) will slide slightly on the outer wall of the first sliding shaft (4). When the inner wall of the support seat (6) slides slightly on the outer wall of the first sliding shaft (4), the first spring (5) will be compressed. When the first spring (5) is compressed, its inner wall will slide on the outer wall of the first sliding shaft (4). Finally, when the lower surface of the pressing plate (13) extrude and shape the metal workpiece inside the placement groove (7), the top plate (9) can be lifted to proceed to the next step.

10. The method for processing a hardware cold extrusion forging die according to claim 8, characterized in that: In the step S5, the motor (19) inside the bracket (18) is first turned on. When the motor (19) starts to operate, it drives the turntable (20) at its output end to rotate. When the turntable (20) rotates, the fixed sleeve (21) on its outer wall is rotated. When the turntable (20) rotates, it also drives the connecting column (23) on its outer wall to rotate. When the connecting column (23) rotates, it slides up and down on the inner wall of the movable sleeve (22) on its outer wall. When the outer wall of the connecting column (23) slides up and down on the inner wall of the movable sleeve (22), it drives the movable sleeve (22) to rotate with it. When the movable sleeve (22) rotates, it drives the sliding rod (24) on its outer wall to slide left and right inside the bracket (18). When the sliding rod (24) slides left and right inside the bracket (18), it drives the fan (25) at one end thereof to cool the extruded metal workpiece.

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